Circuit for cancelling offset capacitance of capacitive touch screen panel and device including the same
US10082916B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Jul 4, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Mar 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen controller for cancelling an offset capacitance of a capacitive touch screen panel includes a code generator configured to generate a time-invariant digital code and a time-variant digital code during an offset cancellation time. A switched-capacitor array converts the time-invariant digital code and the time-variant digital code into an amount of electric charges corresponding to the offset capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.